---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Wed 05/04/22: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:02 AM - =?utf-8?Q?Have_any_of_you_kolbers__been_looking_at_the_new_brush?= =?utf-8?Q?less_electric_lawnmowers_do_they_have_controllers_fit_?= =?utf-8?Q?to_run_an_electric_motor_on_a_KOLB_the_batteries_and_t?= =?utf-8?Q?he_motor_don=99t_appear_to_be_to_heavy_and_the_c?= =?utf-8?Q?ut_for_an_hour_wide_open_for_$_600_or_less_looks_like_?= =?utf-8?Q?everything_you_need_? (chris davis) 2. 05:34 AM - Electric mowers (chris davis) 3. 12:15 PM - Re: Electric mowers (1957grnchev@bluemarble.net) 4. 12:35 PM - Re: Electric mowers (Franklin Geiser) 5. 04:50 PM - Re: Electric mowers (William Lambdin) ________________________________ Message 1 _____________________________________ Time: 05:02:00 AM PST US From: chris davis Subject: Kolb-List: =?utf-8?Q?Have_any_of_you_kolbers__been_looking_at_the_new_brush?= =?utf-8?Q?less_electric_lawnmowers_do_they_have_controllers_fit_?= =?utf-8?Q?to_run_an_electric_motor_on_a_KOLB_the_batteries_and_t?= =?utf-8?Q?he_motor_don=99t_appear_to_be_to_heavy_and_the_c?= =?utf-8?Q?ut_for_an_hour_wide_open_for_$_600_or_less_looks_like_?= =?utf-8?Q?everything_you_need_? Sent from my iPhone ________________________________ Message 2 _____________________________________ Time: 05:34:16 AM PST US From: chris davis Subject: Kolb-List: Electric mowers Have any of you KOLBERS looked into the new group of electric lawn mowers for batteries, motors,controllers ? They mow wide open 3000 rpms for an hour cutting $600 or less can they Be modified to fly a KOLB? Sent from my iPhone ________________________________ Message 3 _____________________________________ Time: 12:15:37 PM PST US From: 1957grnchev@bluemarble.net Subject: Re: Kolb-List: Electric mowers Without knowing the exact numbers, a electric mower, would likely have no more power than the same using a gas engine. And seeing that most electric mowers, are rather small and weak, lets guess 3 bhp equivalent. That's ~2200-2400 watts. (2.4 kW) That is also the prescribed power for a particular 11 lb high performance R/C model, using 24 to 48 volts, and from 100 to 50 amps. And a healthy 4000-5500Mah LiPo battery pack. At full throttle, that would last about 15 minutes.. just right for a good RC flight. It could also make for a SERIOUS electric bicycle power-plant.. but a 503 Rotax is 37 kilowatts. You might need 15 electric lawn mowers to produce the same results. Check out https://www.aeroexpo.online/aeronautic-manufacturer/brushless-electric-motor-3233.html. 40-60kW for $6500, minus the batteries, and electronic speed control. On 2022-05-04 8:34 am, chris davis wrote: > > Have any of you KOLBERS looked into the new group of electric lawn > mowers for batteries, motors,controllers ? They mow wide open 3000 > rpms for an hour cutting $600 or less can they > Be modified to fly a KOLB? > > Sent from my iPhone > ________________________________ Message 4 _____________________________________ Time: 12:35:35 PM PST US From: Franklin Geiser Subject: Re: Kolb-List: Electric mowers Look up Peter Sripol, he's built his own ultralight aircraft with a single electric motor. https://youtu.be/hp7JcmwKQcU It's much larger than the lawn mower motors of course, and probably closer to a rotax 277 in power, but it does work! Would need two of those to get a Kolb flying reasonably I would think. On Wed, May 4, 2022 at 3:16 PM <1957grnchev@bluemarble.net> wrote: > > Without knowing the exact numbers, a electric mower, would likely have > no more power than the same using a gas engine. And seeing that most > electric mowers, are rather small and weak, lets guess 3 bhp equivalent. > That's ~2200-2400 watts. (2.4 kW) That is also the prescribed power for > a particular 11 lb high performance R/C model, using 24 to 48 volts, and > from 100 to 50 amps. And a healthy 4000-5500Mah LiPo battery pack. At > full throttle, that would last about 15 minutes.. just right for a good > RC flight. > > It could also make for a SERIOUS electric bicycle power-plant.. but a > 503 Rotax is 37 kilowatts. You might need 15 electric lawn mowers to > produce the same results. > > Check out > > https://www.aeroexpo.online/aeronautic-manufacturer/brushless-electric-mo tor-3233.html. > > 40-60kW for $6500, minus the batteries, and electronic speed control. > > On 2022-05-04 8:34 am, chris davis wrote: > > > > Have any of you KOLBERS looked into the new group of electric lawn > > mowers for batteries, motors,controllers ? They mow wide open 3000 > > rpm=99s for an hour cutting $600 or less can they > > Be modified to fly a KOLB? > > > > Sent from my iPhone > > =========== =========== =========== =========== =========== > > ________________________________ Message 5 _____________________________________ Time: 04:50:57 PM PST US From: William Lambdin Subject: Re: Kolb-List: Electric mowers The new Fisher airplane company is developing a range of electric propulsion packages from 33 hp to 100 and hoping to offer them at about 1 and 1/2 times the cost of equivalent ice unites. Might want to keep track of their progress. Its going to happen! Lanny Sent from my iPhone > On May 4, 2022, at 3:16 PM, 1957grnchev@bluemarble.net wrote: > > > Without knowing the exact numbers, a electric mower, would likely have no more power than the same using a gas engine. And seeing that most electric mowers, are rather small and weak, lets guess 3 bhp equivalent. That's ~2200-2400 watts. (2.4 kW) That is also the prescribed power for a particular 11 lb high performance R/C model, using 24 to 48 volts, and from 100 to 50 amps. And a healthy 4000-5500Mah LiPo battery pack. At full throttle, that would last about 15 minutes.. just right for a good RC flight. > > It could also make for a SERIOUS electric bicycle power-plant.. but a 503 Rotax is 37 kilowatts. You might need 15 electric lawn mowers to produce the same results. > > Check out https://www.aeroexpo.online/aeronautic-manufacturer/brushless-electric-motor-3233.html. 40-60kW for $6500, minus the batteries, and electronic speed control. > >> On 2022-05-04 8:34 am, chris davis wrote: >> Have any of you KOLBERS looked into the new group of electric lawn >> mowers for batteries, motors,controllers ? They mow wide open 3000 >> rpms for an hour cutting $600 or less can they >> Be modified to fly a KOLB? >> Sent from my iPhone > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kolb-list Browse Digests http://www.matronics.com/digest/kolb-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.